Jerking when going up hill
 

This last weekend we was driving down through WV. and while climbing some hills I notice the truck bucking or Jerking some as I pulled the hills. It started doing the same thing on flat land, now this is not all the time. i changed the fuel filter thinking it was the problem but it is still doing it,not as bad.I am asking would it be a fuel pump going bad or maybe a coil? any help would be greatly appreciated.

Is the check engine light on? Sounds like a misfire. Use the search tool and type in Misfire.

I agree, its probably a misfire. My 02 was doing the same thing. I replaced the plugs and all 8 coils and is just fine now, and I also have no more pinging running 87 octaine fuel like I did before. The truck runs smooth like new. I know the coils are expensive, but I got all 8 shipped for about 90.00 on ebay. The result was well worth the money and 2-3 hours it took me to do the job.

The service engine light does not come on, It did a couple weeks ago and found #6 coil to be bad. can you check these even if the light doesn't come on.

Elcamino, are you saying that you got all 8 coils for $90.00 cause I paid $46.00 for one coil. And if so was it a discount store?

Pumper, how many miles do you have on the plugs/COPs? Check e-bay there are usually some good deals on COP's there

It's also worth replacing your PCV valve while you're at it, it can sometimes cause behaviour that mimics a misfire, however sounds like you have a real one...if nobody's mentioned it, it seems to be better to replace all the coils/COPs at once.

Do the Rev's change at all? If that does not happen it is most definately a miss-fire I had one on my 01 (#7 Cylinder), and once I brought it in they ran a check (I had just bought the truck so I didn't have an Edge yet) and the dealsership paid for it ($200) for parts I am not sure to just fix the miss-fire. Anyway bring it in anyway even though the CEL isn't on.
~Phil

mine did that only in overdrive only around 40 mph. if you would give it more gas it would kick out of overdrive and it would stop. i changed the fuel filter and it fixed it

You can try to kick your monitor into gear.

Misfire Monitor Repair Verification Drive Cycle:

The Misfire Monitor can only be tested if the fuel gauge reads above one quarter full or the FLI PID is above 15% (percentage fuel tank fill).

Start the engine and drive the vehicle to a location where speeds can reach 88 to 97 km/h (55 to 60 mph) and coast down to 64 km/h (40 mph) without traffic interference.

Accelerate at wide-open throttle to allow vehicle to shift at red-line (if equipped with a tachometer).

Immediately return to normal speed limits.

Perform the following drive procedure three consecutive times.

Accelerate on highway to 97 km/h (60 mph). Maintain speed for 30 seconds.
Coast down with foot off the accelerator pedal from 97 km/h to 64 km/h (60 mph to 40 mph).

I changed the plugs 3 weeks ago when #6 coil went bad, I have 96000 mi on the truck.I talked a mechanic yesterday and he told me that since I have that many miles it is due for new coils that they will start breaking down, he said if I did not want to spend the money for all the coils at once I could buy 3 more since I had already replaced 1 and start the process of elimation. Then finish buying the other ones when I got the cash. You guys are right they are not cheap. Through Ford they are $75 ea. at carquest they are $46 so I think that is the route I will go. I will also change the pcv. Thanks Guys.

Most here buy there coils form kevin - Global Atomotive an ebay store - He sells 8 new COPs for $96 as a f150 package..

He use to sell a Package deal including Motorcraft plugs for about $130.

jbrew, your saying that I can get all 8 for $96? if so do you have web site or something that I can get ahold of this place. Maybe I'm misunderstanding the price. If that is so I just paid $46 for 1. You know these trucks are not like the old ones with plug wires and all that, I'm learning as time goes by. I do appreciate all the help and money saved.

The coils themselves are usually not the problem. Usually, just the COP boot and spring are all that are needed.

They're only 5 bucks each at AutoZone. Add in a really large tube of dielectric grease and use the grease generously.

Steve

Steves right , check out the boot and use plenty of dielectri grease - If you don't , just look at the insides of a dry boot , you'll see carbon trails - Spark goes nuts inside the boots if there dry..

Freakin Global Automotive is cloesd down until March 5th - Sucks , but it's worth the wait - I have a Blue 01 screw in the shop right now that's been running Global COP's for almost a year without an issue.

Heres his link , he left a message for everyone about whats going on and when he will re-open -

http://stores.ebay.com/GLOBAL-AUTOMO...Q3amesstQQtZkm

Also look up "COP's Deal" in the search bar within the engines forum and look for my post - I posted the package deals some time ago.

Anyway , COP's threw global are $12 a piece..